EUVD-2026-43081
GHSA-25f6-4hrw-j87c
Severity by source
AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:N
Network-delivered exploit requires admin authentication (PR:H) plus complex preconditions (AC:H); no availability impact reported by vendor.
Primary rating from Vendor (drupal).
CVSS VectorVendor: drupal
Lifecycle Timeline
5DescriptionCVE.org
Improperly Controlled Modification of Dynamically-Determined Object Attributes vulnerability in Drupal Drupal core allows Object Injection. This issue affects Drupal core versions: from 0.0.0 to 10.5.12, from 10.6.0 to 10.6.11, from 11.2.0 to 11.2.14, from 11.3.0 to 11.3.12, from 0.0.0 to 11.0.*, from 0.0.0 to 11.1.*.
AnalysisAI
Object injection via a mass assignment flaw in Drupal Core enables an authenticated administrator to manipulate dynamically-determined PHP object attributes, potentially compromising confidentiality and data integrity of the application. Affected versions span multiple active and end-of-life branches: 10.5.x through 10.5.12, 10.6.0 through 10.6.11, 11.2.0 through 11.2.14, 11.3.0 through 11.3.12, and the entirely unsupported 11.0.x and 11.1.x branches. No public exploit code is identified at time of analysis, and EPSS at 0.16% (6th percentile) signals very low observed exploitation activity despite the C:H/I:H impact potential.
Technical ContextAI
CWE-915 - Improperly Controlled Modification of Dynamically-Determined Object Attributes - describes a class of vulnerability commonly called 'mass assignment,' where untrusted or attacker-controlled input can populate object properties not intended to be externally writable. In PHP-based frameworks like Drupal Core (cpe:2.3:a:drupal:drupal_core), this typically manifests when form input, API payloads, or serialized data is mapped loosely onto PHP objects without an allowlist of permissible properties. When combined with PHP's object deserialization ecosystem, such flaws can enable gadget-chain exploitation where manipulated object state triggers unintended code paths - effectively making mass assignment a stepping stone to remote code execution. The 'Code Injection' and 'Drupal Core' tags assigned to this CVE reinforce that the object injection pathway leads to executable code impact rather than merely data corruption.
RemediationAI
Upgrade Drupal Core using the vendor patch confirmed available via the official advisory at https://www.drupal.org/sa-core-2026-005. Based on the affected version ranges in EUVD data, the implied fixed releases are 10.6.12 for the 10.6.x branch, 11.2.15 for the 11.2.x branch, and 11.3.13 for the 11.3.x branch - however, these fix versions are inferred from affected-range boundaries and must be verified against the vendor advisory before applying. The 10.5.x, 11.0.x, and 11.1.x branches are covered by the affected range with no upper bound fix version indicated, strongly suggesting these branches are end-of-life; sites on these branches should migrate to a supported branch (10.6.x or 11.3.x) and then apply the corresponding patch. As a compensating control while patching is coordinated, audit and minimize the number of accounts holding Drupal administrator-level roles, since PR:H is a hard prerequisite for exploitation - reducing the privileged account surface directly reduces exposure. Do not treat role reduction as a permanent substitute for patching.
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External POC / Exploit Code
Leaving vuln.today